1. Pick up where you left offHaving a brand new, empty tab greet you when you start up Firefox certainly has some advantages, but a lot of the time you'd rather just carry on with what you were doing last time. To do so, head to the Preferences option on the Firefox menu (three bars, top right), then choose Restore previous session under Startup on the General tab.
2. Reach your favorite features quicklyFirefox gives you plenty of control over how the browser toolbar is arranged and what it includes. Open the Firefox menu and choose Customize; from there, you can drag and drop shortcuts to certain features—including edit tools, your browsing history, and private browsing—into the toolbar, so they're always available to you.
3. Forget what just happened
One of the shortcuts you can add to the Firefox toolbar (see above) is a Forget button, which will erase a very specific part of your recent browsing history for you. Click the button and you can wipe out the last five minutes, two hours, or 24 hours, clearing the history and any logged cookies; all traces of that browsing period will be deleted.
4. Customize the new tab pageThe new tab page can be a very useful jumping off point for getting around the web, showing pages you've visited recently, pages you visit a lot, and bookmarks you've saved in the browser. To change how much you see of each, open the Firefox menu, click Preferences, then scroll to Firefox Home Content under Home.
5. Share large, encrypted filesIf you've got large files to share with other people, Firefox can take care of this for you—it has its own service called Firefox Send, which you can find on the web here. Sign in with your Firefox account and you can send files up to a total of 2.5 gigabytes via a simple online link, with end-to-end encryption as standard and the option to password protect the link.
6. Add tags to your bookmarksYou've got two ways to organize bookmarks: by using folders and by adding tags. Tags give you an easy way of collecting bookmarks around certain topics or ideas, like work, leisure, family, research, or whatever. You can add tags when you save a bookmark via the star icon on the address bar, and through Show All Bookmarks on the Bookmarks menu.